12v until 2500 rpm - weird idle issues.
#1
12v until 2500 rpm - weird idle issues.
Searched this and didn't find anything...
As the title says im only getting slightly less than 12v until i rev the engine up to around 2500 rpm, then ~14v, Any ideas beyond replacing the alternator?
I am having trouble getting the car to idle due to, I think, the larger variance in voltage. I'm running MS2 PNP so, as far as I can find, there is only the linear .144 ms/v adjustment.... the car runs great but stalls out at idle and coming to a stop
EDIT: I should add that the car has the flow force 670cc injectors 1.12 ms@ 13.2 and .144 ms/v, 4.0 req fuel
Its idling around 44 VE at about 14.0 afrs (when seeing 12v idles ok)
Tune attached, thanks for any help
Should I just lower the reqfuel number until it idles nicely at 60-65 VE ?
As the title says im only getting slightly less than 12v until i rev the engine up to around 2500 rpm, then ~14v, Any ideas beyond replacing the alternator?
I am having trouble getting the car to idle due to, I think, the larger variance in voltage. I'm running MS2 PNP so, as far as I can find, there is only the linear .144 ms/v adjustment.... the car runs great but stalls out at idle and coming to a stop
EDIT: I should add that the car has the flow force 670cc injectors 1.12 ms@ 13.2 and .144 ms/v, 4.0 req fuel
Its idling around 44 VE at about 14.0 afrs (when seeing 12v idles ok)
Tune attached, thanks for any help
Should I just lower the reqfuel number until it idles nicely at 60-65 VE ?
Last edited by mr steve; 09-22-2017 at 01:15 PM.
#6
On throttle and under load it runs fine and at the right afrs.
On the stock injectors I had it running and idling smoothly.
Last edited by mr steve; 09-22-2017 at 12:41 PM.
#8
670 is right off the card, and those are the settings posted on the FF site.
Are there better settings known?
I could get it to idle decently when the voltage was around 12v. Once the car is revved past 2.5k and the voltage foes to 14 it starts to act strangely at idle, but normal while driving
Are there better settings known?
I could get it to idle decently when the voltage was around 12v. Once the car is revved past 2.5k and the voltage foes to 14 it starts to act strangely at idle, but normal while driving
#9
670 is right off the card, and those are the settings posted on the FF site.
Are there better settings known?
I could get it to idle decently when the voltage was around 12v. Once the car is revved past 2.5k and the voltage foes to 14 it starts to act strangely at idle, but normal while driving
Are there better settings known?
I could get it to idle decently when the voltage was around 12v. Once the car is revved past 2.5k and the voltage foes to 14 it starts to act strangely at idle, but normal while driving
Injector Data ? Flow Force Injectors
#18
Tweaking Enginerd
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All those threads is pretty much why I no longer try to provide support for this stuff in the forumverse.
for you, a quick and dirty approach is to use the proper req fuel, target 12.5 AFR in your idle cells, bracket the idle in both the load domain and the rpm domain, tune the ISC stepper parameters, and turn on idle advance. I prefer a squashed "Z" shape for my idle advance curve.
If anything I just said is foreign, use Google, not questions on this (or any) forum. Official MS documentation is way betyer than forum threads. Experiment, take notes, and draw your own conclusions.
for you, a quick and dirty approach is to use the proper req fuel, target 12.5 AFR in your idle cells, bracket the idle in both the load domain and the rpm domain, tune the ISC stepper parameters, and turn on idle advance. I prefer a squashed "Z" shape for my idle advance curve.
If anything I just said is foreign, use Google, not questions on this (or any) forum. Official MS documentation is way betyer than forum threads. Experiment, take notes, and draw your own conclusions.
#20
All those threads is pretty much why I no longer try to provide support for this stuff in the forumverse.
for you, a quick and dirty approach is to use the proper req fuel, target 12.5 AFR in your idle cells, bracket the idle in both the load domain and the rpm domain, tune the ISC stepper parameters, and turn on idle advance. I prefer a squashed "Z" shape for my idle advance curve.
If anything I just said is foreign, use Google, not questions on this (or any) forum. Official MS documentation is way betyer than forum threads. Experiment, take notes, and draw your own conclusions.
for you, a quick and dirty approach is to use the proper req fuel, target 12.5 AFR in your idle cells, bracket the idle in both the load domain and the rpm domain, tune the ISC stepper parameters, and turn on idle advance. I prefer a squashed "Z" shape for my idle advance curve.
If anything I just said is foreign, use Google, not questions on this (or any) forum. Official MS documentation is way betyer than forum threads. Experiment, take notes, and draw your own conclusions.